Transformer equipment capable of dynamically regulating voltage and phase

Abstract

The invention discloses transformer equipment capable of dynamically regulating voltage and phase, which comprises a first phase modulation switch cabinet and a second phase modulation switch cabinet which are symmetrically arranged on two sides of a transformer body mechanism, and a voltage regulation switch cabinet is arranged on the front side of the transformer body mechanism. An exciting winding, a voltage regulating winding, a first phase regulating winding and a second phase regulating winding are sequentially wound on each phase of the three-phase three-column iron core from inside to outside, insulating cylinders are arranged among the three-phase three-column iron core, the exciting winding, the voltage regulating winding, the first phase regulating winding and the second phase regulating winding in a sleeving manner, and a wiring frame mechanism is arranged on the front side of the three-phase three-column iron core. A control cabinet is arranged on the front side of the voltage regulation switch cabinet; according to the invention, the two phase modulation windings and the voltage regulation winding are matched with the three externally connected independent switch cabinets to respectively measure the voltage and current of the input side, and the switch gears are dynamically adjusted by the control cabinet, so that the synchronous adjustment of the voltage and the phase is realized, and the requirements of real-time grid connection and power flow suppression are met; and the winding structure with multiple groups of graded heads can meet the application of input voltage in a larger range.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution network operation, and in particular to a transformer device capable of dynamically adjusting voltage and phase. Background Art

[0002] Existing transformers mainly use no-excitation voltage regulation and on-load voltage regulation to change the voltage. Generally, there is a fixed phase difference between the input side and the output side. The grids are connected to a common channel requiring the same phase and voltage. The time and space of renewable energy generation are uneven, and it is impossible to dynamically adjust the phase and voltage through conventional transformers. Therefore, the present invention proposes a transformer device that can dynamically adjust the voltage and phase to solve the problems existing in the prior art. Summary of the invention

[0003] In view of the above problems, the purpose of the present invention is to propose a transformer device that can dynamically adjust the voltage and phase. The transformer device that can dynamically adjust the voltage and phase can measure the input side voltage and current respectively through two phase-adjusting windings and one voltage-adjusting winding in cooperation with three independent switch cabinets connected to the outside, and dynamically adjust the switch position through the control cabinet of the integrated main control system to achieve synchronous adjustment of voltage and phase to meet the requirements of real-time grid connection and power flow suppression; the winding structure with multiple groups of graded outlets can meet the application of a wider range of input voltage.

[0004] To achieve the purpose of the present invention, the present invention is implemented through the following technical solutions: a transformer device capable of dynamically adjusting voltage and phase, comprising a transformer body mechanism, a first phase-adjusting switch cabinet, a second phase-adjusting switch cabinet, a voltage-adjusting switch cabinet and a control cabinet, wherein the first phase-adjusting switch cabinet and the second phase-adjusting switch cabinet are symmetrically arranged on both sides of the transformer body mechanism, and the voltage-adjusting switch cabinet is arranged on the front side of the transformer body mechanism, the transformer body mechanism comprises a three-phase three-column iron core, an excitation winding, a voltage-adjusting winding, a first phase-adjusting winding, a second phase-adjusting winding, an insulating cylinder and a wiring rack mechanism, and each phase of the three-phase three-column iron core is sequentially wound with an excitation winding, a voltage-adjusting winding, a first phase-adjusting winding and a second phase-adjusting winding from the inside to the outside, an insulating cylinder is sleeved between the outer side of the three-phase three-column iron core and the excitation winding and the outer side of the second phase-adjusting winding, a wiring rack mechanism is provided on the front side of the three-phase three-column iron core, and a control cabinet is provided on the front side of the voltage-adjusting switch cabinet.

[0005] Further improvements are: the control cabinet has a built-in main control system, which includes a host module, a voltage and current acquisition module, a switch input module, an analog input module, a relay output module, a wireless communication module, a battery module and a data encryption module; the three-phase three-column iron core is fixedly installed by an iron core clamp, and the wiring rack mechanism is fixed on the front side of the iron core clamp.

[0006] Further improvements are: the host module is used to centrally process and judge the acquired data and issue a fault alarm signal, the voltage and current acquisition module respectively acquires the three-phase voltage and current of the transformer input side, the transformer input and output side and the transformer output side, the switch input module is used to set the switch signal, the analog input module is used to acquire the ambient temperature and the oil level temperature, the relay output module is used to output the current signal, the wireless communication module is used for the wireless signal communication of the host module, the battery module is used for the power supply of the main control system as a whole, and the data encryption module is used to convert the acquired data into an encrypted digital signal.

[0007] A further improvement is that the wiring rack mechanism includes a wire clamp, a voltage regulating terminal wiring board, a second phase regulating terminal wiring board, a first phase regulating terminal wiring board and an excitation terminal wiring board, a voltage regulating terminal wiring board is horizontally arranged in the middle of the wire clamp, a second phase regulating terminal wiring board is symmetrically arranged on the upper and lower sides of the voltage regulating terminal wiring board, two groups of wire clamps on the outer sides of the second phase regulating terminal wiring board are symmetrically arranged with the first phase regulating terminal wiring board, and two groups of wire clamps on the outer sides of the first phase regulating terminal wiring board are symmetrically arranged with the excitation terminal wiring board.

[0008] A further improvement is that the voltage regulating winding, the first phase regulating winding and the second phase regulating winding all adopt a multi-group graded terminal structure, the terminal of the voltage regulating winding is led to the voltage regulating terminal wiring board, the terminal of the first phase regulating winding is led to the first phase regulating terminal wiring board, the terminal of the second phase regulating winding is led to the second phase regulating terminal wiring board, and the terminal of the excitation winding is led to the excitation terminal wiring board.

[0009] A further improvement is that the first phase-adjusting terminal wiring board and the second phase-adjusting terminal wiring board are respectively connected to the first phase-adjusting switch cabinet and the second phase-adjusting switch cabinet arranged on both sides through silicone cables, and the voltage-regulating terminal wiring board is connected to the voltage-regulating switch cabinet arranged on the front side through silicone cables.

[0010] The beneficial effects of the present invention are as follows: the present invention can measure the input side voltage and current respectively through two phase-adjusting windings and one voltage-regulating winding in cooperation with three independent switch cabinets connected externally, and dynamically adjust the switch gear through the control cabinet of the integrated main control system to achieve synchronous adjustment of voltage and phase, meeting the requirements of real-time grid connection and power flow suppression; the winding structure with multiple groups of graded outlets can meet the application of a wider range of input voltages, and achieve closed-loop power supply under extreme conditions with large amplitude and phase differences, which has good social benefits and broad market prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the present invention.

[0012] Figure 2 This is a top view of the layout position distribution of the present invention.

[0013] Figure 3 It is a side sectional view of the transformer body structure of the present invention.

[0014] Figure 4 This is a front view structural diagram of the transformer body of the present invention.

[0015] Figure 5 This is a top view of the transformer body structure of the present invention.

[0016] Figure 6 This is the main control system architecture diagram of the present invention.

[0017] Figure 7 The figure is a schematic diagram of the numbering of the terminals of the wire clamp of the present invention.

[0018] Among them: 1. The first phase-adjusting switch cabinet; 2. The second phase-adjusting switch cabinet; 3. The voltage-adjusting switch cabinet; 4. The control cabinet; 5. The three-phase three-column iron core; 6. The excitation winding; 7. The voltage-adjusting winding; 8. The first phase-adjusting winding; 9. The second phase-adjusting winding; 10. The insulating cylinder; 11. The iron core clamp; 12. The wire clamp; 13. The voltage-adjusting terminal wiring board; 14. The second phase-adjusting terminal wiring board; 15. The first phase-adjusting terminal wiring board; 16. The excitation terminal wiring board. DETAILED DESCRIPTION

[0019] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples. The examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0020] With the massive access of distributed renewable energy and the increasing diversification of load characteristics, a series of new challenges have been brought to the planning, dispatching and configuration of power equipment of the power system. In terms of power grid planning, the spatial distribution of the power flow of the new energy transmission channel is uneven, the transmission capacity of the transmission section is limited, and the transmission potential of the section is difficult to fully utilize; the time distribution of the power flow of the new energy transmission channel is uneven, the maximum power duration is short, and the economic benefits of the investment in transmission equipment are not high. In terms of power grid operation, in the case of limited transmission channels shared by new energy and conventional power sources, due to the large uncertainty of new energy output, conventional units need to be adjusted frequently to ensure that the shared channel does not exceed the limit; the power flow of the new energy transmission channel is complex and changeable, and the controllability of the power grid power flow dispatching is reduced. In addition, power users have higher and higher requirements for power supply reliability and are very sensitive to power outages or even short-term power outages. Therefore, how to reasonably control the distribution of power grid power flow and improve the obstruction of the transmission line network channel has become an urgent problem to be solved in the power transmission system.

[0021] Existing transformers mainly use no-excitation voltage regulation and on-load voltage regulation to change the voltage. Generally, there is a fixed phase difference between the input side and the output side. The grids are connected to a common channel requiring the same phase and voltage. The time and space of new energy generation are uneven, and dynamic adjustment of phase and voltage cannot be achieved through conventional transformers.

[0022] Based on the above problems, this embodiment provides a transformer device capable of dynamically adjusting voltage and phase. Figure 1-Figure 7 As shown, the transformer includes a transformer body structure, a first phase-adjusting switch cabinet 1, a second phase-adjusting switch cabinet 2, a voltage-adjusting switch cabinet 3 and a control cabinet 4. The first phase-adjusting switch cabinet 1 and the second phase-adjusting switch cabinet 2 are symmetrically arranged on both sides of the transformer body structure, and the voltage-adjusting switch cabinet 3 is arranged on the front side of the transformer body structure. This arrangement method can make the three groups of independent switch cabinets and the transformer body structure connected nearby, reducing the floor space. The transformer body structure includes a three-phase three-column core 5, an excitation winding 6, a voltage-adjusting winding 7, a first regulating winding 8, a first regulating winding 9, a first regulating winding 10, a first regulating winding 11, a first regulating winding 12, a first regulating winding 13, a first regulating winding 14, a first regulating winding 15, a first regulating winding 16, a first regulating winding 17, a first regulating winding 18, a first regulating winding 19, a first regulating winding 20, a first regulating winding 21, a first regulating winding 22, a first regulating winding 23, a first regulating winding 24, a first regulating winding 25, a first regulating winding 26, a first regulating winding 27, a first regulating winding 28, a first regulating winding 29, a first regulating winding 30, a first regulating winding 31, a first regulating winding 32, a first regulating winding 33, a first regulating winding 34, a first regulating winding 35, a first regulating winding 36, a first regulating winding 37, a first regulating winding 38, a first regulating winding 39, a first regulating winding 31, a first regulating winding 3 Phase winding 8, second phase-adjusting winding 9, insulating tube 10 and wiring rack mechanism. Each phase of the three-phase three-column core 5 is wound with an excitation winding 6, a voltage regulating winding 7, a first phase-adjusting winding 8 and a second phase-adjusting winding 9 in sequence from the inside to the outside. An insulating tube 10 is sleeved between the outer side of the three-phase three-column core 5 and the excitation winding 6 and the outer side of the second phase-adjusting winding 9. Insulating tubes are not necessary in actual production and can be replaced by other insulating structures. A wiring rack mechanism is provided on the front side of the three-phase three-column core 5, and a control cabinet 4 is provided on the front side of the voltage regulating switch cabinet 3.

[0023] The transformer forms a main magnetic circuit through the excitation winding wound on the three core columns of the three-phase three-column core.

[0024] The control cabinet 4 has a built-in main control system, which includes a host module, a voltage and current acquisition module, a switch input module, an analog input module, a relay output module, a wireless communication module, a battery module and a data encryption module. The three-phase three-column iron core 5 is fixedly installed by an iron core clamp 11, and the wiring rack mechanism is fixed on the front side of the iron core clamp 11.

[0025] The host module is used to centrally process and judge the acquired data and issue a fault alarm signal. The voltage and current acquisition module respectively acquires the three-phase voltage and current of the transformer input side, the transformer input and output side, and the transformer output side. The switch input module is used to set the switch signal. The analog input module is used to obtain the ambient temperature and oil level temperature. The relay output module is used to output the current signal. The wireless communication module is used for the wireless signal communication of the host module. The battery module is used for the power supply of the main control system as a whole. The data encryption module is used to convert the acquired data into an encrypted digital signal.

[0026] The wiring rack mechanism includes a wire clamp 12, a voltage regulating terminal wiring board 13, a second phase regulating terminal wiring board 14, a first phase regulating terminal wiring board 15 and an excitation terminal wiring board 16. The voltage regulating terminal wiring board 13 is horizontally arranged in the middle of the wire clamp 12, and the second phase regulating terminal wiring board 14 is symmetrically arranged on the upper and lower sides of the voltage regulating terminal wiring board 13. The first phase regulating terminal wiring board 15 is symmetrically arranged on the wire clamps 12 outside the two groups of second phase regulating terminal wiring boards 14, and the excitation terminal wiring board 16 is symmetrically arranged on the wire clamps 12 outside the two groups of first phase regulating terminal wiring boards 15.

[0027] The voltage regulating winding 7, the first phase regulating winding 8 and the second phase regulating winding 9 all adopt a multi-group graded terminal structure. The terminal of the voltage regulating winding 7 is led to the voltage regulating terminal wiring board 13, the terminal of the first phase regulating winding 8 is led to the first phase regulating terminal wiring board 15, the terminal of the second phase regulating winding 9 is led to the second phase regulating terminal wiring board 14, and the terminal of the excitation winding 6 is led to the excitation terminal wiring board 16. The terminals of the first phase regulating winding, the second phase regulating winding and the excitation winding are divided into two groups, which are respectively connected to 6 wiring boards in total, so that each terminal is firmly fixed and clearly distributed.

[0028] Specific connection method between transformer body and switch:

[0029] The 10 groups of taps of the first phase-adjusting winding in the transformer body mechanism are connected to the 10 groups of terminals corresponding to the first phase-adjusting switch cabinet; the 10 groups of taps of the second phase-adjusting winding in the transformer body mechanism are connected to the 10 groups of terminals corresponding to the second phase-adjusting switch cabinet; the 1-9 groups of terminals of the voltage-regulating winding in the transformer body mechanism are connected to the 9 groups of terminals corresponding to the voltage-regulating switch cabinet, and the connecting wires between the above terminals can be cables or copper bars.

[0030] Specific transformer coil tapping method:

[0031] The two phase-adjusting windings in the transformer body are wound with wires. The three-phase coils have the same structure. Each tap has three phases in a group. According to the needs of external wiring, the corresponding taps are drawn out:

[0032] Excitation winding: 11 groups of taps are led out, one of which is numbered SA, SB, and SC, which is the grid access end and leads to the excitation terminal wiring board on the upper side.

[0033] There are 9 groups of terminals numbered 1-9. The even-numbered taps are led to the excitation terminal wiring board on the upper side, the odd-numbered taps are led to the excitation terminal wiring board on the lower side, and the last group of taps numbered X, Y, and Z are led to the excitation terminal wiring board on the upper side and short-circuited by cables.

[0034] First phase-adjusting winding: 10 groups of taps are drawn out and numbered according to the terminals. The taps with even numbers are led to the first phase-adjusting winding terminal wiring board on the upper side, and the taps with odd numbers are led to the first phase-adjusting winding terminal wiring board on the lower side;

[0035] Second phase-modulation winding: 10 groups of taps are drawn out and numbered according to the terminals. The taps with even numbers are led to the second phase-modulation winding terminal wiring board on the upper side, and the taps with odd numbers are led to the second phase-modulation winding terminal wiring board on the lower side;

[0036] Voltage regulating winding: Lead out 9 sets of taps and connect them to the voltage regulating winding terminal block.

[0037] The above terminals can be connected by cables or copper bars. For details on the numbers, see the attached manual. Figure 7 shown.

[0038] The first phase-adjusting terminal wiring board 15 and the second phase-adjusting terminal wiring board 14 are respectively connected to the first phase-adjusting switch cabinet 1 and the second phase-adjusting switch cabinet 2 arranged on both sides through silicone cables, and the voltage-adjusting terminal wiring board 13 is connected to the voltage-adjusting switch cabinet 3 arranged on the front side through silicone cables.

[0039] The excitation terminal wiring board is connected to the input three-phase power supply, and the output side of the second phase-adjusting switch cabinet is connected to another power grid. The voltage and current transformers set on the input and output sides collect signals and transmit them to the control cabinet. The main control system in the control cabinet calculates the voltage and phase deviation on both sides of the input and output, and issues adjustment instructions to the three switch cabinets based on the calculation results. The switch cabinets receive the instructions and adjust to the corresponding gear, thereby achieving coordination between the voltage amplitude and phase of the output and input power grids, and realizing closed-loop power supply.

[0040] The transformer body of the present invention adopts a dry-type transformer structure, which is maintenance-free, safe and environmentally friendly. It is easy to install, and the switch cabinet, control cabinet and transformer can be transported and installed separately; or an integrated method can be adopted to integrate the switch cabinet and the transformer together and then cooperate with the control cabinet; the three independent switches used can adopt an integrated switch structure to reduce the installation space, so that more scene installation and operation needs can be met.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which are within the scope of the present invention to be protected. For example, three independent switch cabinets can be replaced with an integrated switch cabinet; the internal structure of the transformer winding can adopt other structural types, such as resin casting; the transformer body can adopt a double body structure, etc. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A transformer device capable of dynamically adjusting voltage and phase, characterized in that: The invention comprises a transformer body structure, a first phase-adjusting switch cabinet (1), a second phase-adjusting switch cabinet (2), a voltage-adjusting switch cabinet (3) and a control cabinet (4), wherein the first phase-adjusting switch cabinet (1) and the second phase-adjusting switch cabinet (2) are symmetrically arranged on both sides of the transformer body structure, and the voltage-adjusting switch cabinet (3) is arranged on the front side of the transformer body structure, and the transformer body structure comprises a three-phase three-column iron core (5), an excitation winding (6), a voltage-adjusting winding (7), a first phase-adjusting winding (8), a second phase-adjusting winding (9 ), an insulating cylinder (10) and a wiring rack mechanism, each phase of the three-phase three-column iron core (5) is wound with an excitation winding (6), a voltage regulating winding (7), a first phase regulating winding (8) and a second phase regulating winding (9) in sequence from the inside to the outside, an insulating cylinder (10) is sleeved between the outer side of the three-phase three-column iron core (5) and the excitation winding (6) and the outer side of the second phase regulating winding (9), a wiring rack mechanism is provided on the front side of the three-phase three-column iron core (5), and a control cabinet (4) is provided on the front side of the voltage regulating switch cabinet (3).

2. The transformer device capable of dynamic voltage and phase adjustment according to claim 1, characterized in that: The control cabinet (4) has a built-in main control system, which includes a host module, a voltage and current acquisition module, a switch input module, an analog input module, a relay output module, a wireless communication module, a battery module and a data encryption module. The three-phase three-column iron core (5) is fixedly installed by an iron core clamp (11), and the wiring rack mechanism is fixed on the front side of the iron core clamp (11).

3. The transformer device capable of dynamic voltage and phase adjustment according to claim 2, characterized in that: The host module is used to centrally process and judge the acquired data and issue a fault alarm signal. The voltage and current acquisition module respectively acquires the three-phase voltage and current of the transformer input side, the transformer input and output side, and the transformer output side. The switch input module is used to set the switch signal. The analog input module is used to acquire the ambient temperature and the oil level temperature. The relay output module is used to output the current signal. The wireless communication module is used for the wireless signal communication of the host module. The battery module is used for the power supply of the main control system as a whole. The data encryption module is used to convert the acquired data into an encrypted digital signal.

4. The transformer device capable of dynamic voltage and phase adjustment according to claim 1, characterized in that: The wiring rack mechanism comprises a wire clamp (12), a voltage regulating terminal wiring board (13), a second phase regulating terminal wiring board (14), a first phase regulating terminal wiring board (15) and an excitation terminal wiring board (16); a voltage regulating terminal wiring board (13) is transversely arranged in the middle of the wire clamp (12); a second phase regulating terminal wiring board (14) is symmetrically arranged on the upper and lower sides of the voltage regulating terminal wiring board (13); the first phase regulating terminal wiring board (15) is symmetrically arranged on the wire clamps (12) outside the two groups of the second phase regulating terminal wiring boards (14); and the excitation terminal wiring board (16) is symmetrically arranged on the wire clamps (12) outside the two groups of the first phase regulating terminal wiring boards (15).

5. The transformer device capable of dynamic voltage and phase adjustment according to claim 4, characterized in that: The voltage regulating winding (7), the first phase regulating winding (8) and the second phase regulating winding (9) all adopt a multi-group graded terminal structure, the terminal of the voltage regulating winding (7) is led to the voltage regulating terminal wiring board (13), the terminal of the first phase regulating winding (8) is led to the first phase regulating terminal wiring board (15), the terminal of the second phase regulating winding (9) is led to the second phase regulating terminal wiring board (14), and the terminal of the excitation winding (6) is led to the excitation terminal wiring board (16).

6. The transformer device capable of dynamic voltage and phase adjustment according to claim 4, characterized in that: The first phase-adjusting terminal wiring board (15) and the second phase-adjusting terminal wiring board (14) are respectively connected to the first phase-adjusting switch cabinet (1) and the second phase-adjusting switch cabinet (2) arranged on both sides through silicone cables, and the voltage-adjusting terminal wiring board (13) is connected to the voltage-adjusting switch cabinet (3) arranged on the front side through silicone cables.

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